【摘要】 详细介绍了一种短波电台中频数字化平台的硬件设计。该平台基于软件无线电思想,充分利用了电台的射频前端,在二中频处进行低通采样,通过精心设计的数字信道和专用芯片进行数字变频,在基带采用通用DSP对信号进行调制解调。经测试,该平台不仅提高了电台的收发性能,而且使电台部分具有了软件无线电功能,通过在DSP中加载不同的软件模块可满足现代短波通信对语音、数据等多种通信业务的需要,具有良好的兼容性和可扩展性。更多还原

【Abstract】 The hardware desigh of IF digitization platform of SW transeiver based on of software defined radio, which adopts special digital up-down frequencyconversion and digital signal processing technology, is introduced in this paper. By testing and comparing,the platform improves some SW communication performances and has some functious of software radio.By loading different modules in DSP,it can meet the needs of the modern shortwave radio for voice,data and ather services of communication and it has a better compatibicity and expandability.更多还原